摘要：This paper presents an investigation on the effect of probe support on the flow field of an axial *** experiment is carried out in a large-scale low-speed research compressor.A cylindrical probe support intruding to 50% blade span was installed at 50% chord upstream from the rotor leading *** region from 5° to 32° off the probe support in the direction of rotation at the rotor outlet was measured with a 5-hole probe and a high-response total pressure *** experiment is performed at both near-design and near-stall *** measuring results of 5-hole probe and high-response total pressure probe indicate that the probe blockage effect is different at different blade *** wake of the probe support weakens the leakage vortex intensity at the tip region,leading to greater total pressure *** near-design condition,the presence of probe support has a negative effect on the region from 75% to 92% span,while improves the flow field below 75% *** near stall condition,the probe support has a negative effect on the region from 70% to 90% span,and almost has no influence on the flow field below 70% span.

摘要：A high-temperature-rise combustor that can be used in high-temperature wind tunnel is introduced in this *** kerosene is used in this type of combustor,with division combustion scheme and evaporator fuel-supply device *** the performance test under atmospheric pressure,when the inlet temperature is 500K and air flow is within the range of 1.5-3.0 kg/s,the outlet temperature can be precisely regulated within the range of ***,higher uniformity of outlet temperature distribution and higher combustion efficiency can be *** the long-time working in the wind tunnel,various components of the combustor,especially the combustor liners are checked without finding any anomaly such as thermal deformation.

摘要：The experimental research on cavity flow field plays an important part in the structural design and optimization study of trapped vortex combustor (TVC). Many of the previous flow field experiments were conducted in the cold condition instead of during combustion. This paper adopting PIV system and Lambda-2 vortex criterion in-vestigates the influence of various factors, such as equivalent ratio in the cavity, air intake parameter in the cavity, mainstream air intake parameter and mainstream holder structure, on cavity flow field for a TVC using methane as the fuel. The experimental research showed that cold-condition flow field differed from the combustion flow field, in terms of either vortex core position or vortex structure. Mainstream air intake velocity and cavity air intake velocity affected the flow field structure. U-type and V-type mainstream holders had significant influence on cavity flow field.

摘要：这篇论文在一个接近音速的轴的压缩机转子(NASA 转子 37 ) 的空气动力学的表演上论述轴的不一致的尖端清理的效果的数字调查。在转子经过以内的三维的稳定的流动地以 17188.7 rpm 的设计车轮速度与 0.356 公里的资料尖端清理被模仿。模拟结果与测量结果很好一致，它验证了数字方法。然后，在转子经过以内的三维的稳定的流动地与不同轴的不一致的尖端清理分别地被模仿。计算结果证明最佳的轴的不一致的尖端清理能改进压缩机表演，当效率和压缩机的压力比率被增加时。流动机制是轴的不一致的尖端清理能削弱尖端漏旋涡，在界面层刮倒低精力的液体并且减少流动阻塞和尖端损失。

摘要：在一个轴流动的迷的一个出口的不稳定的流动地上的一种投出 streamwise 的片的效果的试验性的调查被执行。在从在中心的后面的边的 25% 弦 downstream 的流动领域以不同集体流动的条件用一根快反应的五洞的压力探针被测量。投出的片的不稳定的流动与光滑的片的相比。测量结果显示那：(1 ) 投出的片由 modulating 制止速度变化和压力变化片界面层，它在中心区域并且在转子贡献流动损失减小以设计条件弄醒区域；(2 ) 溪流明智的沟在在片界面层制止光线的迁居并且消除混合的尖端流动起一个重要作用，它以设计条件在尖端区域贡献流动损失减小；(3 ) 在近的货摊调节，投出的表面不能减少流动损失，当分离发生在片界面层时，甚至附近增加损失。